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利用聚合物分散液晶(PDLC)开关特性并与固化荧光材料的特性相结合,制备出一种新型的、具有荧光效应并且荧光激发可由电场调控的荧光开关。用蓝色LED入射到开关器件,通过调制施加在开关上的驱动电压,当光开关关闭时可阻挡蓝色LED光通过,抑制荧光的产生,当光开关开启时,可在散射光路中探测到明显的荧光产生。实验发现,驱动电压在0~120 V间,荧光光强能够实现近似线性的调制。
A novel fluorescent switch with fluorescence effect and fluorescence excitation controlled by the electric field was prepared by using PDLC switching characteristics and combining with the properties of the cured fluorescent material. A blue LED is incident on the switching device. By modulating the driving voltage applied to the switch, the blue LED light can be blocked when the light switch is turned off to inhibit the generation of fluorescence. When the light switch is turned on, it can be detected in the scattered light path Clear fluorescence. The experiment found that the driving voltage between 0 ~ 120 V, the fluorescence intensity can achieve approximately linear modulation.